Bavarian Pilsner

No-sparge method with 10 gal. of reverse osmosis water (3.48 qt./lb.). Mash in with initial temperature of 151° F (66° C). Rest for 4 hours, during which time the mash temperature may drop as low as 142° F (61° C). Raise temperature to 156° F (69° C) by applying direct heat and recirculating. Run off to kettle and boil for 90 minutes. Chill to 46° F (8° C) and pitch yeast with 90 seconds of pure O2.
Monitor temperature using thermowell in carboy. Ferment at 48° F (9° C) until gravity reaches 1.020 (approximately 5 days). Let rise to 52° F (11° F) until gravity reaches 1.012 SG (approximately 2 days). Let rise to 62° F (17° C) until completion (approximately 3 days). Closed transfer to fully CO2 purged and sanitized keg. Chill to 32° F (0° C) and lager for 2 weeks. Force carbonate to 2.5 volumes (5 g/L) of CO2.

The very long mash time is a function of convenience, but creates a very fermentable wort. Use gelatin fining if required to clear after lagering. (1 tsp. in 200 mL distilled water, heated to 150° F (66° C)). Lager and add fining at 32° F (0° C). Serve at 38–40° F (3–4° C).